Weatherproof Surface Mount 200 watt Transformer 120 volt/12.5 volt, 5.5"W x 12.5"H. Heavy duty aluminum painted housing with built-in circuit breaker. Available in other sizes. Call for pricing on Photo Cell and Timer options. Call for assistance with transformer sizing and for other available transformers. High quality, made in the USA. This transformer is the best choice for any of your outdoor, landscape lighting needs.